1. Lacking brilliance or vitality
   "a dull lacklustre life"
   - lackluster [US], lusterless [N. Amer], lustreless [Brit, Cdn] 
2. Lacking lustre or shine
   "staring with lacklustre eyes"
   - lackluster [US], lusterless [N. Amer], lustreless [Brit, Cdn]

See also: dull, hebetudinous

• dermatophytosis
• dermatosclerosis
• dermatosis
• Dermestidae
• dermic
• dermis
• Dermochelyidae
• Dermochelys
• Dermochelys coriacea
• dermoid cyst
• Dermoptera
• dernier
• dernier cri
• dero
• derogate
• derogation
• derogative
• derogatorily
• derogatory
• derrick
• Derrida
• derriere
• derring-do
• derringer
• derris